Currently Liberal party members are required to vote in a block against any same-sex marriage legislation, according to a policy from leader Tony Abbott.

Australian Marriage Equality (AME) reinvigorated their campaign to get Abbott to allow legislators in the Liberal-National coalition to vote as they wish in a conscience vote on same-sex marriage. The campaign group is asking supporters to email coalition MPs about the issue.

'If we can convince a majority of Coalition candidates to say "yes" to a conscience vote, the last major barrier to reform will be removed,' said AME national director Rodney Croome.

'I urge marriage equality supporters to take inspiration from the pro-equality votes in New Zealand and France, and take action to ensure Australia is not far behind.'